/*
 *  Copyright 1999-2019 Seata.io Group.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package io.seata.server.storage.db.lock;

import io.seata.common.executor.Initialize;
import io.seata.common.loader.EnhancedServiceLoader;
import io.seata.common.loader.LoadLevel;
import io.seata.config.ConfigurationFactory;
import io.seata.core.constants.ConfigurationKeys;
import io.seata.core.exception.TransactionException;
import io.seata.core.lock.Locker;
import io.seata.core.store.db.DataSourceProvider;
import io.seata.server.lock.AbstractLockManager;
import io.seata.server.session.BranchSession;
import io.seata.server.session.GlobalSession;

import javax.sql.DataSource;

/**
 * The type db lock manager.
 *
 * @author zjinlei
 */
@LoadLevel(name = "db")
public class DataBaseLockManager extends AbstractLockManager implements Initialize {

	/**
	 * The locker.
	 */
	private Locker locker;

	@Override
	public void init() {
		// init dataSource
		String datasourceType = ConfigurationFactory.getInstance()
				.getConfig(ConfigurationKeys.STORE_DB_DATASOURCE_TYPE);
		DataSource lockStoreDataSource = EnhancedServiceLoader.load(DataSourceProvider.class, datasourceType).provide();
		locker = new DataBaseLocker(lockStoreDataSource);
	}

	@Override
	public boolean releaseLock(BranchSession branchSession) throws TransactionException {
		try {
			return getLocker().releaseLock(branchSession.getXid(), branchSession.getBranchId());
		}
		catch (Exception t) {
			LOGGER.error("unLock error, xid {}, branchId:{}", branchSession.getXid(), branchSession.getBranchId(), t);
			return false;
		}
	}

	@Override
	public Locker getLocker(BranchSession branchSession) {
		return locker;
	}

	@Override
	public boolean releaseGlobalSessionLock(GlobalSession globalSession) throws TransactionException {
		try {
			return getLocker().releaseLock(globalSession.getXid());
		}
		catch (Exception t) {
			LOGGER.error("unLock globalSession error, xid:{}", globalSession.getXid(), t);
			return false;
		}
	}

}
